Rameen Ghafoor
PRODUCT DESIGNER
Case Study: Secure Peer-to-Peer Content Sharing
Fast, controlled content sharing across Wi-Fi networks, built with privacy and clarity in mind.
🧭 Project Overview
Pxio is a mobile and desktop app that allows users to instantly share visual content across nearby devices connected to the same Wi-Fi network. Designed for co-working spaces and teams, it prioritizes speed, access control, and data privacy—removing the need for cloud uploads or third-party storage.
Key features included:
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Role-based access control (RBAC)
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Visibility filters (who can see whom on the network)
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End-to-end content encryption
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Ephemeral session sharing (auto-deletes after 1 hour)
👤 My Role
I was the sole Product Designer on a compact team that included:
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3 Engineers (front-end and back-end)
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1 Product Manager
We built the MVP in a focused 2-week sprint, and I led UX strategy, interface design, prototyping, and user feedback collection.
I was responsible for:
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Defined and iterated UX flows and product strategy to align with user needs and platform access models.
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Led user research and journey mapping, transforming feedback into actionable insights for secure onboarding and access controls.
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Created and tested interactive prototypes for enterprise SaaS, enabling early feedback and ensuring alignment with Trust and Safety principles.
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Partnered with product and engineering to maintain a unified design system, improving cross-platform UX and reducing cognitive load.
🔧Tools
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Figma
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Stories On Board
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Atlassian
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Storybook
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HubSpot
🧩 The Problem
Existing file-sharing tools like AirDrop or WeTransfer fell short in several critical ways:
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They were either OS-specific or not truly cross-platform, limiting seamless sharing across different devices.
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They were too open by default, allowing unintended users on the same network to access shared files without proper controls.
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They lacked permission management suitable for dynamic workspaces—like coworking environments—where visibility over who can see or access files needs to be both customizable and simple.
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Traditional solutions relying on cables, wires, or physical sockets introduced additional problems: they were inconvenient, cluttered shared spaces, created compatibility issues between devices, and often required adapters or extra hardware.
We needed a lightweight, secure, and private solution that enabled selective content sharing without physical connections, offering easy, flexible permission controls tailored for dynamic shared environments like WeWork.
🔍 Discovery & Research
To understand the needs and expectations, I:
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Conducted 5 user interviews with freelancers, facilitators, and remote teams
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Benchmarked tools like Snapdrop, Slack, AirDrop, and Nearby Share
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Mapped common UX failures, especially around visibility and access assumptions
Key insight: people wanted quick sharing but with clear limits and awareness—they needed to trust who could see them and their content.
✏️ Design Process
Although I no longer have access to the early wireframes, my process included:
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Mapping key flows: onboarding, visibility control, file send/receive
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Low-fidelity prototyping in Figma
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Real-time feedback and testing at Halle4 - WeWork with nearby users
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Iterative updates based on ease-of-use concerns
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One of the biggest UX challenges was designing access controls that felt invisible—users didn’t want to “configure permissions” but needed them to work intuitively.
🔄 Testing & Iteration
We tested with 8–10 users inside Halle4 -WeWork and made iterative improvements:
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Added a real-time “Active Peers” panel showing who was discoverable
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Simplified success/failure indicators during file transfer or establishing a connection
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Created a default visibility filter: “Only teammates can see me”
✅ Final Solution
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Card-based UI to represent nearby devices and their roles
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Drag-and-drop file send flow with instant feedback
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RBAC baked into onboarding: Admins, Editors, Viewers
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Session-based encryption: content automatically expires
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Visibility Scope toggle: quickly set who can discover or interact with you
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You can see the prototypes that were created below. These prototypes represent the iterative product screens for Pxio, showing how users could control visibility, manage roles, and share content seamlessly.
📊 Results & Feedback
While informal, our testing yielded clear positive outcomes:
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67% of test users said Pxio felt “faster and more private” than their current workflow
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Stakeholders praised the simplicity and minimal visual friction
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2 teams adopted Pxio as a pilot tool during design sprint reviews
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Users especially loved the clarity around “who can see me”
💡 Learnings & Reflections
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Simplicity + security requires thoughtful defaults—most users won’t manually manage settings
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In shared network environments, visibility is UX — people want awareness, not just control
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What I’d do differently:
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Capture and save early sketches/wireframes
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Use structured tools for collecting feedback
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Plan for long-term case study storytelling from the start
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